Question

SRP values of $Ni,Cu$ and $Zn$ are -$0.25V,+0.34V$ and $-0.74V$ respectively. Pick out the correct statements from the following.

• A. Zinc reduces copper but not nickel
• B. Copper is less reactive than and more reactive than $Ni$
• C. Copper is less reactive than $Ni$ and $Zn$
• D. Zinc can displace $Ni$ and copper from their salt solutions.

Answer 1

Answer: (C), (D)

The correct options are
C Copper is less reactive than $Ni$ and $Zn$
D Zinc can displace $Ni$ and copper from their salt solutions.

On the basis of above given values of SRP of elements, elements in electrochemical series are arranged in increasing order of their tendency to get reduce- $Zn,Ni$ and $Cu$. Thus, $Zn$ and $Ni$ are more reactive than $Cu$ and they can displace $Cu$ from their solutions.